package cn.tedu.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCDemo02 {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        //加载驱动
        Class.forName("com.mysql.cj.jdbc.Driver");
        //创建连接对象
        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root"
        );
        //执行SQL
        Statement statement = connection.createStatement();

        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名");
        String username = scanner.nextLine();
        System.out.println("请输入密码");
        String password = scanner.nextLine();

        String sql = "UPDATE userinfo SET password= '"+password+"' WHERE username='"+username+"'";

        int i= statement.executeUpdate(sql);
        if(i > 0){
            System.out.println("密码修改成功");
        }else{
            System.out.println("用户不存在");
        }
        //断开连接
        connection.close();
    }
}
